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750Li

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Brake locking - 1990 BMW 750iL
Your vehicle uses a high-pressure hydraulic brake booster. It's likely that the pressure regulator sensors that provide the braking assistance are not functioning correctly, providing too much "braking assistance". A professional mechanic, like YourMechanic, can assist with diagnosis of your...
Question
Engine issues - 1991 BMW 750iL
Your engine has gone into "limp" mode. The engine computer senses that one side (or the other) is performing inadequately, which causes it to shut down that side. This is most commonly caused by fuel pump(s) failing. The fuel pump...
Question
car problems
Hello. Noises from beneath the hood can be caused by many things. I would try to determine from what area of the engine, component, or accessory the noise may be coming from and go from there. Vehicle cooling systems don't...
Question
leaking gas underneath. right where the transmission cover is. right at the very end bolt of the trans bolts rear bolts
Hello. A fuel leak from underneath the vehicle is probably going to be caused by a faulty fuel line. I would carefully examine all the fuel lines that run underneath the vehicle, placing extra attention on the ones that run...
Question
Driving issues
Hello.There are many reasons why this can happen, but only a few common causes. Most of the time if the vehicle just shut right off like the ignition was turned off it is because the electronic ignition is failing, the...
Question
I want to change headlight to an adaptive LCD headlight from 2015 BMW 750i. Is it possible?
As with most modern cars, things are more complicated than they seem. The BMW uses a lamp control module to power up the lights. It's not a simple switch-load connection anymore. Among other functions, the lamp control module senses malfunctions...
Question
My vehicle is overheating and the overheating light comes on. What could that be?
Hi there. If the engine is overheating and the light is coming on, then either the engine is overheating from a faulty thermostat, water pump, or burned head gasket, or the coolant temperature sensor is not working properly. Check the...
Question
What is this clear fluid leaking from the front and rear of my 2007 750li?
Hi there. Check the fluid by putting a paper towel on the fluid and smelling it. If the fluid has no odor, then it is water or condensation and that would be normal. If the fluid has a strong odor...
Question
Radio goes off and on intermittently
Hello, thank you for writing in. With intermittent electrical issues, wiring problems are usually to blame. Both the power supply and the ground connection are required for the radio to function. If either of these is loose or has a...
Question
Had an oil Leak repaired. Then a tune up. Now there's a puddle leaking from my car. What happened?
The 750 is a great car, but when it gets some age and miles it can become pretty high maintenance. There is no way I can tell you what is leaking from here at my desk, the car will have...
Question
Driver window not rolling up
You have to perform the window initialization procedure when replacing components related to any of the windows. Follow this procedure from BMW. Control procedure for initialization: Press the window 'open' switch beyond the second switching position. The window may open...
Question
Idrive and TPI malfunction.
Hello. From what you describe it would appear that your vehicle is experiencing some sort of electrical issues. If the Idrive system is not working properly then it may be possible that the Idrive computer has failed, or possibly the...
Question
How much does it cost to replace the coolant lines and the upper/lower oil pan gasket?
Billing question sent to CS for the cost to replace the coolant hoses by the turbo and the engine oil pan gasket.
Question
Battery discharging while stopped, electrical devices were temporarily switched off.
The first thing to do with a draw is to check and make sure nothing is on that can be turned on by a human. Some common sources are interior lights, exterior lights, after market stereo systems or other after...
Question
Why does the the engine sound loud when you first start it up? Then it quiets, but as you drive you can still hear it on a Echo
Hi there. That is a very interesting situation you have with your BMW. To be honest, I've never seen tire valve stems cause any type of noise; especially under the conditions you're describing. It is possible that you may have...
Question
Tune-up
Hi there. Today's modern cars, trucks and SUV's are much more complex than older vehicles. As such, there really isn't a general "tune-up" service. Instead, manufacturers have created recommended maintenance service, which is unique for each make, model and year....
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I think there is a leak and water is dripping? Can you fix water or oil leaks? Thanks.
Hi There, Yes, we can fix coolant and oil leaks. Generally, if you are noticing a water leak, this would be coming from the radiator, water pump or any of the radiator hoses around the motor that may be going...
Question
Valve guide seals 2006 BMW 750i
Hello - unfortunately, this is not a service YourMechanic.com can offer at this time. Thanks for thinking of us though!
Question
Brake keep locking up while driving and coming to a stop and while in park.
The calipers could have a piston that is sticking or the combination valve on the brake system is sticking causing the brakes to be locking up after touching the brake pedal. I recommend seeking out a professional, such as one...
Question
I have a coolant leak...recently changed the expansion tank...now I have a leak right in front of the radiator 2008 BMW 750Li
Hello - there is an air bleed hose that runs across the top of the radiator (under a plastic cover) and into the expansion tank. There is a coolant level sensor, and a coolant transfer hose (expansion tank to the...

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